Patella bone is an example of

The vertebral formula of a human is:

Which bone is not formed from cartilage during its development?

Through which aperture does the spinal cord pass out of the cranium?

An elderly woman slipped in the bathroom and had severe pain in her lower back. After $X-ray$ examination,doctors told her it is due to a slipped disc. What does that mean? How does it affect our health?

The vertebrarterial canal (foramen transversarium) is present in the vertebrae that are: